Re: RFD: best way to automatically rewrite a git DAG as a linear history?

From: Avery Pennarun <apenwarr@gmail.com>
Date: Feb 18, 2010, 18:38 UTC
Message-ID: <32541b131002181038x26093e3em250b46b5a6e9d97c@mail.gmail.com>
In-Reply-To: <20100218051129.GD10970@coredump.intra.peff.net>

On Thu, Feb 18, 2010 at 12:11 AM, Jeff King <peff@peff.net> wrote:

> One simple strategy would be to squash all side-branch development into
> a single commit.

Something like this (replace MY_START_BRANCH with your starting branch, and do this in a clone of your repository so you don't destroy anything by accident):

        parent=""
        git rev-list --first-parent --reverse  | while read commit; do
                if [ -z "$parent" ]; then
                        git checkout -f $commit
                        git clean -fdx
                else
                        git diff $parent $commit | git apply --index
                        git commit -C $commit
                fi
                parent=$commit
        done

Have fun,

Avery